电磁干扰噪声诊断与抑制
EMI noise diagnosis and suppression
泄漏噪声诊断
Acoustic leak detection system
振噪诊断
diagnoses of vibration and noise
A型超声诊断仪
amplitude modulation type ultrasonic diagnostic equipment
B 型超声诊断仪
B-mode ultrasonic diagnostic apparatus
便携式超声诊断扫描仪
portable ultrasonic diagnostic scanner